Supporting Information Filename Description aoc7840-sup-0001-suplemenarty_materials.docxWord 2007 document , 1.3 MB Fig. S1 FT-IR spectrum of TBH. Figure S2. Mass spectrum of TBH. Figure S3. 1HNMR spectrum of Zn(TBH). Figure S4. The electronic spectra Cu(TBH) complex with different time at different time (0.5, 1, 2, 3, 5, 8, 10 h). Figure S5. Relation between cell viability and concentration of TBH, Cu(TBH) and Zn(TBH) Nano-chelates. Figure S6. The optimized structures of TBH, Cu(TBH) and Zn(TBH).